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Stockholders' Equity (Narratives) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
May 31, 2021 | May 31, 2020 | May 31, 2021 | May 31, 2020 | Feb. 18, 2021 | Jul. 17, 2014
Debt Instrument [Line Items] |  |  |  |  |  |
Cash dividends declared per common share (in dollars per share) | $ 0.15 | $ 0.09 | $ 0.30 | $ 0.18 |  |
Payment, Tax Withholding, Share-based Payment Arrangement |  |  | $ 8,456 | $ 6,219 |  |
Dividend paid in each quarter (in dollars per share) | 0.15 | 0.09 | $ 0.30 | $ 0.18 |  |
Class of Stock [Line Items] |  |  |  |  |  |
Cash dividends declared per common share (in dollars per share) | 0.15 | 0.09 | 0.30 | 0.18 |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 0.15 | $ 0.09 | $ 0.30 | $ 0.18 |  |
Shares Withheld to Pay Taxes [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Common stock repurchased (in shares) |  |  | 207,775 |  |  |
Payment, Tax Withholding, Share-based Payment Arrangement |  |  | $ 8,500 |  |  |
May 2018 Stock Repurchase Program |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of common stock, authorized, approved under a board approved stock repurchase program (in shares) | 2,193,947 |  | 2,193,947 |  |  |
Director Plan SARs [Domain] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of common stock, authorized, approved under a board approved stock repurchase program (in shares) |  |  |  |  |  | 680,000
2014 Equity Incentive Plan [Domain] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | 680,000 |  | 680,000 |  |  |
PSU 2017 [Domain] | Performance Shares [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Common Stock, Shares, Issued (in shares) |  |  |  |  | 419,070 |

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